Question

b) (-2).29+(-2).(99)+(-2).(-30)

c)(-25).9.(-4).(-7)

d) (-37).84+37.(-16)

giup mik voi

Answer 1

b, ( cái (99) là -99 hay +99)

\(c,=\left[\left(-25\right).\left(-4\right)\right].\left[9.\left(-7\right)\right]\\ =100.\left(-63\right)=-6300\\ d,=37.\left(-84\right)+37.\left(-16\right)\\ =37.\left[\left(-84\right)+\left(-16\right)\right]\\ =37.\left(-100\right)=-3700\)

Answer 2

b) (-2).29+(-2).(99)+(-2).(-30)

=1.(-2).29+(-2).(99)+(-2)

=-2. (1+99+30)

=-2.130

=-260

c)(-25).9.(-4).(-7)

=[-25.(-4)].[9.(-7)]

=100.(-63)

=-6300

d) (-37).84+37.(-16)

=(-37+37).[84+(-16)]

=0.[84+(-16)]

=0